switch led on pin 4 with button on pin 14

button_led.py

@@ -0,0 +1,26 @@
+#!/usr/bin/python
+
+from time import sleep
+
+import RPi.GPIO as GPIO
+
+try:
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(4, GPIO.OUT)
+    GPIO.setup(14, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+    last_state = True
+    last_led_state = False
+
+    while True:
+        input_state = GPIO.input(14)
+        if input_state == False and input_state != last_state:
+            print 'Button pressed'
+            GPIO.output(4, ~last_led_state)
+            last_led_state = ~last_led_state
+        last_state = input_state
+        sleep(0.1)
+except KeyboardInterrupt:
+    GPIO.output(4, False)
+finally:
+    GPIO.cleanup()